If you like to view YouTube videos on your television but are frusrated by how bad it typically looks, check out Youtube XL. It's still YouTube however, optimized for viewing on a TV screen.
Designed by David Kraftsow (who actually has a whole slew of other impressive online-trickery projects) YooouuuTuuube creates a grided view of a single Youtube video, multiplied across the screen with each video's playback slightly delayed. The result is a often beautiful patchwork of video combined with sound. One of the most famous examples is the "Alice" usage. We also like Beyonce's Countdown version.
Maybe you remember reading the Bubble Boys article in New York magazine over the summer. It describes student/coder Feross Aboukhadijeh who created this humble website which grew in popularity overnight and rewarded him with several job offers and internet fame. The concept is simple. It apply's Google Instant's search functionality with YouTube. Begin to type a word and it will autoplay the most popular search result for the letters you start to type. The purpose? There is none.
We're in love with this final website. Tubalr takes advantage of YouTube as a source for music. People constantly upload static videos in order to play music from it or watch music videos in the background while they listen to songs they don't have on their computer. Tubalr creates a beautifully simple interface which allows you to create playlists based on your own search results to seamlessly and elegantly play a whole slew of similar music-based videos.
(Image: Screengrab by Mike Tyson)